No, the CRA does not allow self-employed Canadians to claim estimated or projected expenses on their tax return if those expenses have not actually been incurred by December 31st. You can only deduct business expenses that are paid or legally owed during the tax year in question. However, this rule comes with important nuances that self-employed filers should understand to avoid audit risk and maximize legitimate deductions. The CRA's core principle is that tax deductions must be based on real transactions with supporting documentation. When you claim an expense on your 2026 tax return, the CRA expects you to provide proof that the expense was actually incurred. This could be an invoice, receipt, bank statement, or contract showing work was completed or goods received. Estimating expenses creates several problems from the CRA's perspective: - It inflates reported losses or reduces reported income artificially - Estimating allows room for taxpayers to guess rather than track actual spending - It makes auditing and verification nearly impossible - It conflicts with the principle that you must keep detailed records to support all claimed amounts Self-employed Canadians typically use one of two accounting methods: cash basis or accrual basis.
Using cash basis accounting (most common), no. The expense is claimed in the year you actually pay it. Using accrual basis accounting (with CRA approval), you may claim it in 2026 if the work or goods were provided in 2026 and you have a legal obligation to pay. Check with your accountant about which method applies to you.
You claim the expense when the goods arrive and are in your possession, not when you order them. In this case, the 2027 tax year would be correct. Keep the invoice date and delivery confirmation to prove timing.
Only in limited cases. Vehicle expenses may be estimated based on reasonable business mileage records, and meals are capped at 50% of actual costs. You cannot make up expenses out of thin air. The CRA expects supporting documentation for all amounts claimed.
Yes, if you use cash basis accounting (the most common method). The invoice must be paid by December 31st, 2026, to be deducted in that tax year. Accrual basis allows different rules but requires CRA approval and strict record-keeping.
Keep the original invoice or receipt, bank statement or proof of payment, and any contract or confirmation showing when the work was done or goods received. The CRA can request these documents during an audit, so keep them for six years.